PROCEDURE 9

BATTERIES

B

WHEN TO CHARGE BATTERIES (FIGURE 6)

The Battery Discharge Indicator (BDI) is a bar graph dis- play located on the MKIV joystick. It will keep you informed as to power availability. A visual warning is given before the

CHARGING BATTERIES (FIGURE 7)

NOTE: New batteries MUST be fully charged prior to initial useofthewheelchair.

WARNING

Apower becomes too low to operate the wheelchair. At full T chargethetwo(2)LEFTsegmentsandthefarthestRIGHT

Tsegment of the bar graph will be illuminated. As the battery E becomesdischarged,thefarthestRIGHTsegmentwillpro- R gressively move to the LEFT until only the last two (2) bars I (LEFT) are illuminated. At this level the last two (2) bars

E(LEFT) will start to Flash ON and OFF to indicate that the

Send user should charge the batteries as soon as possible.

Battery Discharge

Battery Discharge

Indicator (BDI) (in LCD

Indicator (BDI)

Readout)

MKIV- A JOYSTICK

MKIV- A+ JOYSTICK

Battery Discharge

 

Indicator (BDI)

 

MKIV- X JOYSTICK

FIGURE 6 - WHEN TO CHARGE BATTERIES

Never attempt to recharge the batteries by attaching cables directly to the bat- tery terminals or clamps. Always use the recharging plug located on the side of the wheelchair frame.

DO NOT attempt to recharge the batter- ies and operate the power wheelchair at the same time.

During use and charging, unsealed bat- teries will vent hydrogen gas which is ex- plosive in the right concentration with air.

CAUTION

Always charge new batteries before ini- tial use or battery life will be reduced.

NOTE: As a general rule, batteries should be recharged daily to assure the longest possible life and minimize the required charging time. Plan to recharge the bat- teries when it is anticipated the wheelchair will not be used for a long period of time.

The range per battery charge using recommended batter- ies should be approximately 5 to 9 hours of typical opera- tion. Extensive use on inclines may substantially reduce per charge mileage.

Description and Use of Battery Chargers

The charger automatically reduces the charge from an ini- tially high rate to a zero reading at a fully charged condition. If left unattended, the charger should automatically shut-off when full charge is obtained.

There are some basic concepts which will help you understand this automatic process. They are:

The amount of electrical current drawn within a given time to charge a battery is called the “charge rate”. If, due to usage, the charge stored in the battery is low, the charge rate is high, as indicated by the green light on the charger. Initially, the green light will stay illuminated for a short period of time followed by a longer period of off time. As a charge buildsup,thechargerateisreduced,andthegreenlightwill stay illuminated for a longer period of time followed by a shorter off time.

WARNING

If the charger circuit breaker is tripping ON and OFF, unplug the charger and contact Invacare Technical Services, 1-800-832-4707.

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Invacare Arrow FWD, MWD, RWD When to Charge Batteries Figure, Charging Batteries Figure, Battery Discharge Indicator BDI
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Arrow FWD, RWD, MWD specifications

Invacare is a renowned name in the field of mobility technologies, consistently innovating and enhancing the mobility devices market. Among its outstanding offerings are the Invacare MWD (Mid Wheel Drive), RWD (Rear Wheel Drive), and Arrow FWD (Front Wheel Drive) wheelchairs. Each of these models serves unique user needs, featuring distinct designs and functionalities.

The Invacare MWD is engineered for exceptional maneuverability. Its mid-wheel drive technology provides a centralized drive wheel, allowing for tight turns and easy navigation in confined spaces. This makes the MWD particularly suitable for indoor use, where space can be limited. The MWD also features advanced suspension systems, offering superior shock absorption. This results in a smoother ride over various terrains, enhancing user comfort and stability.

On the other hand, the Invacare RWD focuses on robust outdoor performance. With its rear-wheel drive configuration, this model has excellent traction and provides powerful acceleration. The RWD is designed for versatility, equipped with larger wheels that can handle uneven terrain while providing a stable ride. Its durable construction ensures enhanced longevity, making it an ideal choice for users who lead an active lifestyle and require reliable mobility solutions on rugged ground.

The Arrow FWD wheelchair brings another dimension with its front-wheel drive system. This design allows users to easily navigate obstacles as the front wheels can pivot over them. The Arrow FWD is particularly suited for both indoor and outdoor use, as it combines the agility of the MWD with the stability seen in the RWD. It features a compact design, making it easier for users to position themselves in various settings and social situations.

All three models utilize Invacare's cutting-edge technologies, such as advanced control systems and customizable seating options, enabling users to find their optimal comfort and support levels. The customizable features also cater to individual user needs, promoting enhanced independence.

In summary, Invacare’s MWD, RWD, and Arrow FWD wheelchairs represent an impressive blend of functionality, durability, and user-centric design. Each model presents its own unique technologies and attributes, allowing users to make informed choices based on their specific mobility requirements, lifestyle, and preferences. Whether navigating tight indoor spaces or tackling outdoor challenges, Invacare’s range of wheelchairs ensures that users can experience mobility with confidence and ease.
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